Wrench.



100,823,870. l Y f PATENTED JUNB19,1906. y T. W. JESTER. l

WRENCH. l

APPLIoATxoN FILED AUG. 5. 1905.

T' Wfejfem T all whom t 1v1/Cty concern:

* Unirnn ys'rrnis- Pnfrnivrv ormoni g THOMAS W. JESTER, on BAINBRIDGE, GEORGIA.

WRENCH.

ivo. 823,870.

Specification of Letters Patent.

Patented June 19, 1906. v

Application filed August 5,1905. Serial No. 272.866.

The invention relates to an improvement in wrenches, and particularly of the type known as pipe-wrenches.

The mainobject ofthe present invention is the production in a wrench of the class described of means adapted to automatically teeth 8, and within the sli adjust' or tighten the wrench during its operative engagement with the pipe, whereby positive action of the wrench is assured and slipping during use wholly obviated.

V The preferred details of construction will be described in the following speciiication, reference being had particularly to 'the accompanying drawings, whereinf Figure 1 is a view in side elevation of a wrench constructed in accordance with `my invention. Fig. 2 is a similar view, the movable jaw of the wrench being shown in vertical section.l Fig. 3 is a vertical section through the sliding jaw. IFig. 4 is a transverse section illustrating the parts in coperative relation.

Referring to the drawings, my improved wrench comprises the usual shank 1, provided at one end with a handle 2 and at the opposite end with the ordinary iixed jaw 3, preferably formed with serrations or teeth 4 on its operative face, as is usual in wrenches of this type. y

5 represents what I term the sliding jaw, preferably comprising av hollow bodydesigned to embrace the shank 1, being preferably provided adjacent the side faces of the shank with vertically-arranged ribs' 6, designed for coperative engagement with longitudinal channels 7, formed inthe adjacent faces of the shank, whereby the sliding jaw is positively guided in vertical movement.

The forward face of the shank 1 is formed with a series of transversely-arranged ribs or ing jaw is mounted Va cog-pinion 9, positioned to coperate and intermesh at all times with the teeth 8. The pinion'9 is vpreferably mounted about centrally of the movable jaw, being supported upon a pin 10, extending through and headedbeyond the side walls of said movable jaw. x

In connection with the movable jawv I arsection under tension kof the spring 16.

range what I term a moving pipe-section 1 1, comprising a rectangular block formed at opposite points on its side edges with longitudinally-arranged grooves or channels 12, designed to receive ribs 13, projecting inwardly from the upper ends of the sideedges of the movable jaw, it being understood that the movable pipe-section is 'thus mounted for sliding movement transverse the length of the movable jaw and' at the upper end of they upper side, or that face adjacent the operative face of theiixed jaw 3, with a series of stepped offsets 14, designed to coperate with the teeth 4 on .the fixed jaw to grip the pipe. with' a longitudinal bore 15, in which is housed a coil-spring 16, terminally secured. at one end to the rear wall of the bore and at the opposite end to a projection 17, extending from the front wall of the iixed j aw, as clearly shown in Fig. 4. A projection or tooth 18 depends from the under side of the movable pipe-section and within the movablej aw, said tooth being of a size to coperate with the teeth on the pinion 9, but normally held out of engagement with said pinion through `the position of the movable pip; adjusting-arm 19 is slidably mounted near The movable pipe-section is formed."f

latter, said pipe-section being formed onits the lower end of the movable jaw, being ari ranged at one end for engagement with the teeth 8 on theshank 1 and at the opposite end projecting through the forward wall'of the movable jaw and terminally provided4H with a handle 20 therebeyond. A spring 21, connected to the arm 19 and to the forward wall of the movable jaw within said jaw, serves to normally maintain said arm in engagement with the teeth 8, whereby to secure the movable jaw in adjusted relation to the iixed jaw.

Assuming the parts constructed and arranged as described, the operation of my im- IOO proved wrench is as follows: By suitable op- A, Y g

eration of the adjusting-arm 19 the movable jaw of the wrench is manually adjusted to embrace the pipe to be turned. In movement ofthe wrench to turn the pipe the movable pipe-section 11 will, throughV the 4 IIO `and means other than the movable through proper movement of the arm 20, the

sliding jaw being guided in its adjusting movement through the cooperation of the ribs 6 and grooves 7 The spring 16 operates to return the sliding pipe-section to normal position upon release of the pressure incident to the use of the wrench, so that said sliding section is always imposition for the described movement necessary to .tighten the parts when using the wrench.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- 2 5 1. A wrench comprising a fixed jaw, a movable jaw,. a sliding section carried by the jaw, and means other than said section and adapted for operation thereby to force the sliding )aw toward the fixed aw in the operation of the wrench.

2. A wrench comprising a fixed aw and a y.movable jaw, movable means carried by said latter jaw vto coperate with the fixed jaw, n'leallS adapted to force said movable jaw toward the fixed jaw in the operation of the movable .means in one direction.

3. A wrench comprising a fixed aw, a movable jaw, means carried by said latter jaw to 4oA aw, and means carried by the movable jaw to coperate with said feeding means to force the movable jaw toward the fixed jaw in the feed the movable `jaw to and from the fixed Y operation of the wrench.

vwitha fixed jaw, a sliding jaw movable longitudinally of'the shank, a movable section lcoperate with the fixed and means carried by .engage and -inove said pinion in the use of the ,wrench movement of the section to 4. A wrenchcomprising a shank formed carried by said sliding jaw and arranged to l jaw, a gear-pinion mounted in the sliding jaw arranged to coperate with the'teeth foiined with the shank, the movable section to 5. A wrench comprising a shank formed with a fixed aw, a movable jaw embracing the shank, the forward face of the shank being formed with teeth, a gear-pinion mounted within Ythe movable jaw and arranged to engage the teeth on the shank, a movable sec- Vtionvcarried bythe movable jaw and adapted to coperate with the fixed jaw, and a tooth depending from said section and adapted on engage and operate the pinion.

6. A wrench comprising a shank formed with a fixed jaw, a movable jaw embracing the shank, the forward face of the shank being formed with teeth, a gear-pinion mounted within the movable jaw and arranged to engage tlie teeth on the shank, a inevable section carried by the movable jaw and adapted to coperate with the fixed jaw, and a tooth depending from said section and adapted on movement of the section to engage and opel'- ate the pinion, and means for returning said movable section to normal position.

7. A wrench comprising a shank formed 'with a fixed jaw, a movable jaw embracing the shank, the forward face of the shank being formed with teeth, a gear-pinion mounted within the movable jaw and arranged to engage the teeth on the shank, a movable section carried by the movable jaw and adapted to coperate with the fixed jaw, and a tooth depending from said section and adapted. on movement of the section to engage and operate the pinion, and means for securing said movable -jaw in adjusted position with relation to the fixed jaw.

S. A wrench comprising a shank formed with a fixed jaw, a movable aw embracing the shank, the forward face of the shank being formed with teeth, a gear-pinion mounted within the movable aw and arranged to engage the teeth on the shank, a movable section carried by the movable aw and adapted to coperate with the fixed aw, and a tooth depending from said section and adapted on movement of the section to engage and operate the pinion, and an arm movably mounted in the movable liaw and adapted to coperate with the teeth on the shank.

9. A wrench coinpiising a shank formed with a fixed jaw, a movable jaw embracing the shank, the forward face of the shank being formed with teeth, a gear-pinion mounted within the movable jaw and arranged to engage the teeth on the shank, a movable section carried by the movable jaw and adapted to coperate with the fixed jaw, and a `tooth depending from said section and adapted on movement of the section to engage and operate the pinion, and a spring housed within the movable section and terminally connected to said section and to the movable jaw.

10. A wrench comprising a shank having a fixed aw, a sliding jaw movable on the shank, feeding means carried by the sliding aw to coperate with the shank, and means independent of the feeding means and carried by the sliding aw, said latter means being adapted to operate the feeding means in the use of the wrench.

In testimony whereof I afiix my in pi'esence of two witnesses.

THOMAS W. JESTER. Witnesses:

J. W. BUTTS, W. G. D. ToNGE.

signature IOO IIO 

